28. Perhatikan gambar di bawah! Besar <MKN = …. N M K (3x+4) (2x+6)° L​

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28. Perhatikan gambar di bawah! Besar <MKN = …. N M K (3x+4) (2x+6)° L​

Jawaban:

Cari nilai x

  • 3x + 4 + 2x + 6 = 90°
  • 3x + 2x + 4 + 6 = 90°

(Dekatkan bilangan yang sejenis)

  • 5x + 10 = 90°
  • 5x = 90 – 10 = 80
  • x = 80 : 5
  • = 16°
  • MKN = 3x + 4
  • = 3 x 16 + 4
  • = 48 + 4 = 52°